Just one day after the bride-to-be showed off her supertoned legs in a pair of short shorts at LAX, the 33-year-old blond bombshell traded in her Daisy Dukes for sweatpants...but still opted to sport her signature sky-high heels.

Hey, nothing wrong with a little extra height!

The mother of two paired her trendy gray sweat suit with white pointed-toe pumps and a matching handbag while keeping her face covered from the throng of shutterbugs with large oversize shades.

Simpson has been busy flaunting her pre-wedding figure as of late following an estimated 60-pound weight loss. She recently posted an Instagram pic of herself in a sexy one-piece swimsuit which she captioned, "If I'm in a bathing suit I should pose proudly."

The mother of two is in tip-top shape for her upcoming wedding to longtime beau Eric Johnson, and while Simpson's sister Ashlee refused to go into detail on Jess' big day when she caught up with E! News earlier this week, the fellow bride-to-be admitted that "Jessica—everybody—is going to look incredible."

Jessica and her man recently celebrated their upcoming nuptials with a joint bachelor-bachelorette party at the Warwick on Sunday. Guests included Simpson's mom, Tina, as well as Eric's dad and the couple's bridesmaids and groomsmen. "It wasn't about being naughty," says a pal. "They just wanted a great night out with their friends and family."

The soon-to-be husband and wife, who have two children together, celebrated sans any naughty party props and instead said goodbye to their single status with a "relaxed" night that included "fun toasts and dinner and dancing."

They "were just excited to have some fun and celebrate with the people they love," adds a pal.

Jessica's longtime friend and bridesmaidStephanie Terblanche explains that the couple "didn't want a traditional bachelor-bachelorette where they go off and do their own thing, because our group of friends is so close we just wanted to all be together."

"This is what we would do anyway. We would all go out, and I think that this speaks for the group," she adds. "If we are not going to be at someone's house hanging out playing beer pong, this is the closest thing to it."

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